Multiple orchard burner



Sept. 7,1948.- 4 J. L. BREESE- 5 MULTIPLE ORCHARD EURNER Filed Aug. 12,1943- 2 Sheets-Sheet 1 Ina/611202 .hmas L.Bree

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Sept. 7, 1948. A J. L; BREsE 2,448,656

MULT IPLE. ORCHARD BURNER Filed Aug. 12, 1943 2 Sheets-Sheet 2 PatentedSept. 7, 1948 MULTIPLE ORCHARD BURNER.

James L. Breese, Santa Fe, N. Mex., assignor, by mesne assignments, toBreese Burners, Inc., Santa Fe, N. Mex., a corporation of DelawareApplication August 12, 1943, Serial No. 498,279

8 Claims.

My invention relates to an improvement in burners and is particularlyadaptable for use as an outside heater for controlling frost inorchards.

One purpose is to provide a multiple heater in which a plurality ofburners are associated with a single static source of supply.

Another purpose is to provide means for providing two or more burnerswith widely spaced outlets.

Other purposes will appear from time to time throughout thespecification and claims.

My invention is illustrated more or less diagrammatically in theaccompanying drawings, wherein:

Figure 1 is a side elevation with parts in vertical section;

Figure 2 is a section along the line 2-2 of Figure 1;

Figure 3 is a partial vertical section on an enlarged scale;

Figure 4 is a section along the line 4'--4 of Figure 3 on a somewhatlarger scale.

Like parts are indicated b like characters throughout the specificationand drawings.

Referring to the drawings, I indicates the sur face of the ground. 2indicates a tree or other article to be heated. 3 illustrates a fuelreservoir having a bottom 4, a circumferential side wall 5, an upperoffset 6 and a top flange 1. 8 indicates generally a cover having anouter flange 9 adapted to seat upon and surround the flange 1. It isshown as having a central neck Ill with a removable cover ll, throughwhich fuel may be added.

l2 indicates nuts fixed to the bottom 4 of the fuel container. Into eachsaid nut is screw threaded the outer air tube IMO the top of which iswelded the cup I4, the lip of the cup being somewhat higher than thetube IS. The cup i4 is set in the top of a T l5, the bottom of whichabuts against a platform offset IS with th cover 8. This offset isapertured as at 11 to provide an ample flow space about the exterior ofthe tube l3. The cup I4 may be relied upon to hold the T downwardlyagainst the platform [6, or if desired, the T may be welded or otherwisepermanently secured in place. The T has a side branch Hi, the purpose ofwhich will later appear. Rotatably located within the outer air tube I3is the inner air tube [9 with its rotating handle 29. .The handle marest upon the top of the cup I4 and serve as an abutment for limitingthe penetration of the tube 19 downwardly into the tube 13. It will beunderstood that the inner tube 19 may be readily lifted out of the outertube l3.

Thetubes are slotted in opposition. Referring for example to Figure 4, Iillustrate slots 20, 21 of uneven radial extension. Inthe inner tube areslots 22, 23. The inflow of air downwardly through the open top of theinner tube 19 and out through these opposed-slots may be varied byrotating the inner tube about its axis by means of the handle 29. Whenthe parts are in the position of Figure 4, a maximum flow of air ispermitted as the slots 22 and 23 are both unmasked. If the inner tube isrotated in the di rection of the arrow in Figure 4, the slot 22 may bemasked by the outer tube while the slot 23 is still completely unmasked.A further rotation of the tube IS in the same direction will begin themasking of the slot 23 and if the rotation is continued far enough, bothslots will be masked and there will be no perceptible flow of airthrough the tube I9.

25 is a pipe extending outwardly from the branch I8 of the T l 5 Itsinterior communicates with the interior of the burner pct 26 having aplurality'of air inlets 21 located at various distances from its end orbottom 28. An additional row of air inlets 29 is shown adjacent themouth or top of the pot, these inlets being preferably of greaterdiameter and more closely spaced than the inlets 28. The mouth of thepot may be closed by the centrally apertured flame ring 30. The spaceabout the pot is closed or shielded by an outer housing 3|, the bottomof which has a clearance 32 about the pipe 25. Thus air flows in aboutthe pct 26 for inflow through the air inlet apertures 21 and 29.

The pot structure is secured to a duct or flue 33 herein shown as havinga substantially horizontal extension 34 and any suitable ground engagingsupports 35. The duct 34 preferably ends in an elbow 36 communicatingwith a generally vertical section 31. The vertical sections 31 for thevarious burner units are widely spaced or separated as shown in Figure 1and may be suitably disposed in relation to the tree 'or trees or otherarticles to be considered.

I have described but one of the burners but it will be understood thattwo or more identical burner structures may be employed, two being shownin the drawings herein.

Referring to the ioperation of the device, it will be assumed that thecontainer has a sub stantial volume of liquid fuel therein. This fuelmay be added through the neck I0. In starting the burner, the cup M maybe filled with gasoline or any other suitable fuel, the inner air tubet9 may be upwardly withdrawn. When the fuel is ignited in the cup, theburning fuel flows down through the outer tube I3 to the surface of thefuel. The fuel begins to be vaporized and combustion is initiated.Thereafter the inner pipe [9 is dropped into place and is rotated to thedesired position. For example, a substantial excess air supply may beprovided for the starting stage. The combustion taking place at or nearthe level of the fuel vaporizes a substantial amount of fuel and the airadmit-ted is insufiicient for complete combustion at that point. Thevaporized fuel and products of combustion does flow through the pipe 25to the interior of the pct 26. air supply is received through theapertures 21 and a final air supply through the apertures 29. The resultis complete combustion of the vaporized fuel, the flame and the roductsof combustion flowing into the pipe 36. The heat of combustion and theproducts of combustion are delivered upwardly through the pipe 31 andserve to raise substantially the temperature of the air about the tree.

It will be understood that after combustion has been initiated, it iscontrolled by varying the air supply through the pipe l8. An increase inthe air supply will increase the rate of vaporization and combustion anda decrease in the air supply will decrease it. If combustion is to beentirely terminated, the pipe 59 is rotated to the closing position,wherein the apertures 22 and 23 are both masked.

It will be realized that whereas I have shown and described an operativedevice, still many changes might be made in the size, shape, number,arrangement and disposition of parts without departing materially fromthe spirit of my invention and I wish, therefore, that my showing betaken as in a large sense as diagrammatic.

I claim:

1. In a vaporizing burner, a vaporizing container adapted to hold asubstantial body of liquid fuel, a burner, including a burner pot, aconnecting tube extending between the burner pot and the vaporizingcontainer and adapted to direct vaporized fuel from the container to theburner and an air inlet tube extending through said connecting tube andadapted to direct outside air toward the surfaceof the liquid fuel inthe container at a point adjacent the inlet end of said tube.

2. In a vaporizing burner, a vaporizing container adapted to hold asubstantial body of liquid fuel, a burner, including a burner pot, aconnecting tube extending between the burner pot and the vaporizingcontainer and adapted to direct vaporized fuel from the container to theburner and an air inlet tube extending through said connecting tube andadapted to direct outside air toward the surface of the liquid fuel inthe container at a point adjacent the inlet end of said tube, and meansfor varying the flow of air through said tube.

3. In a vaporizing burner, a vaporizing container adapted to hold asubstantial body of liquid fuel, a burner, including a burner pot, aconnecting tube extending between the burner pot and the vaporizingcontainer and adapted to direct vaporized :fuel from the container tothe burner and an air inlet tube extending through said connecting tubeand adapted to direct outside air toward the surface of the liquid fuelin the container at a point adjacent the inlet end of said tube, andmeans for varying the flow of air through said tube, including aconcentric There an additional shutter tube, both tubes having alignableapertures in their sides.

4. In a vaporizing burner, a burner base in the form of a vaporizingcontainer adapted to hold a substantial body of a liquid fuel, an airinlet passage adapted to admit air, for vaporizing combustion, to theinterior of said container, a gas outlet passage for said containersurrounding said air inlet passage, and a burner pot, the interior ofwhich is in communication with and is adapted to receive vaporized fuelfrom said gas outlet passage, said pot having a circumferential wallwith a plurality of air inlets therein.

5. In a vaporizing burner, a burner base in the form of a vaporizingcontainer adapted to hold a substantial body of a liquid fuel, an airinlet passage adapted to admit air, for vaporizing combustion, to theinterior of said container, a gas outlet passage for said containersurrounding said air inlet passage, and a burner pot, the interior ofwhich is in communication with and is adapted to receive vaporized fuelfrom said gas outlet passage.

6. In a vaporizing burner, a burner base in the form of a vaporizingcontainer adapted to hold a substantial body of a liquid fuel, an airinlet passage adapted to admit air, for vaporizing combustion, to theinterior of said container, a gas outlet passage for said containersurrounding said air inlet passage, and a burner pot, the interior ofwhich is in communication with and is adapted to receive vaporized fuelfrom said gas outlet passage, said pot having an open end and a closedend, a vaporized fuel delivery duct extending between said closed endand said gas outlet passage, the opposite end of the pot being open,said pot having a circumferential wall with a plurality of primary airinlet aperture circumferentially spaced thereabout and located atvarious distances from the ends of the pot and a plurality of secondaryair inlet apertures located adjacent the discharge end of the pot.

7. In a vaporizing burner, a burner base in the form of a vaporizingcontainer adapted to hold a substantial body of a liquid fuel, an airinlet passage adapted to admit air, for vaporizing combustion, to theinterior of said container, a gas outlet passage for said containersurrounding said air inlet passage, and a, burner pot, the interior ofwhich is in communication with and is adapted to receive vaporized fuelfrom said gas outlet passage, said pot having an open end and a closedend, a vaporized fuel delivery duct extending between said closed endand said gas outlet passage, the opposite end of the pot being open,said pot having a circumferential wall with a plurality of primary airinlet apertures circumferentially spaced thereabout and located atvarious distances from the ends of the pot and a, plurality of secondaryair inlet apertures located adjacent the discharge end of the pot, and acentrally apertured combustion ring partially closing the otherwise openend of the pot.

8. In a vaporizing burner, a burner base in the form of a vaporizingcontaineradapted to hold a substantial body of a liquid fuel, an airinlet passage adapted to admit air, for vaporizing combustion, to theinterior of said container, 3, gas outlet passage for said containersurrounding said air inlet passage, and a burner pot, the interior ofwhich is in communication with and is adapted to receive vaporized fuelfrom said gas outlet passage, said pot having an open end and a closedend, a vaporized fuel delivery duct extending between said closed endand said gas outlet passage, the opposite end of the pot being open,said pot having a circumferential wall with a plurality of primary airinlet apertures circumferentially spaced thereabout and located atvarious distances from the ends of the pot and a plurality of secondaryair inlet apertures located adjacent the discharge end of the pot, and acombined heater and flue extending from the open end of the pot.

JAMES L. BREESE.

REFERENCES CITED The following references are of record in the file ofthis patent:

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